Practice methods

General marketing methods, each distilled from cases and promoted from raw/ once settled (2026-08-05 sweep). They assume no particular product; project folders link into them.

• the-business-model-wedge — aim the wedge at the incumbent's revenue structure, not its feature list
• parasitic-growth — building inside a host ecosystem: six mechanisms and the transfer formula
• referral-incentive-design — referral design is currency selection
• format-lag-arbitrage — importing proven niche formats across language markets
• audience-language-is-the-market — supported languages are features; addressed languages are markets
• match-routes-by-duplication-cost — price each format by what a second language costs, before the first piece is made